Which navigation risk increased when 18th-century mariners relied solely on sextants without chronometers?

💡 Explanation

When lacking a chronometer, calculating longitude using a sextant involved dead reckoning for time estimation, causing accumulated errors in east-west position because time is directly linked to longitude calculations. Therefore, inaccurate longitude calculations resulted, rather than latitude, body ID, or compass issues which relate to other navigational factors.

• Which navigation error occurs when chronometer's spring weakens in 18th century maritime navigation?
• Which adaptation enabled medieval Islamic astronomers to enhance astrolabe accuracy despite atmospheric refraction effects?
• Which mechanism primarily enabled ancient rammed earth structures to withstand seismic activity?
• Which mechanical risk increased when 18th-century ships transitioned from carvel-built to flush-deck construction?
• Which consequence results from inadequate nixtamalization during early maize preparation?
• Which mechanism increased vulnerability of wooden sailing ships to explosive naval shells introduced in the 19th century?